Pipe wrench



Mar. 27, 1923,

' 1,449,386. E.J. EVANS ET AL.

PI'PE WRENCH. FILED MAR- I 1922.

ull-f!" man!mmm@ QE #EMPA/rbb) Patented Mar. 27, 1923.

anges@ UNITE; STATES ra'reurl OFFICE.

EDWIN' JQ nvAiv'isAND GEORGE nnnifirnim, or SALT LAKE Grrr, UTA.

'PIPE WRENCH.

appucation'med'nareh 17,' 41922. serial No. 544,449.

To all who/m. t mag/concern.'

Be it known that we. EDWIN J'. EVANS' and Grenen E. HEMPHILM citizens oftheA United States7 and residents of Salt Lake City, in the county ofSalt Lake and State oi Utah, have invented certain new and useful`Improvements in Pipe lVrenches,V of which the following is aspecification.

This invention relates to an improvementy in pipe wrenches andhas forits object to provide an improvement of this' character wherein the jawsof the wrench maybe quickly setto engage pipes or other work olt varioussizes and yet at the same timeV be capa-k easy and comparatively`inexpensive ,to man` u'lacture. i l

Uther objects and'a'dvantages ot the invention reside incertain' novelfeatures ofthe constructiom combination and arrangement ot parts as willbe'hereinatter more fully described and particularly pointed out in :theappended claims, reference being had to the accompanying.drawingsjforming a part ot this specification, in which,

Figure 1 isa view in side elevation illustrating a pipe wrench embodyingour invention,

Figure 2 is a bottom plan view of the pipe wrench shownin4 Figure 1.`

Figure 3 is a view thereof in longitudinal vertical section,

Figure 4t is a view in transverse section on lino 4-4 of Figure 1,

Figure 5 is a similar view on line 5 5 of Figure 1,

Referring to the drawings wherein for the sake of illustration is shownthe preferred embodiment ot the invention, numeral 10 designatesgenerally a hollow shank which is hollow in that it is provided with alongitudinal bore. A fixed `iaw 12 is arranged at one end of the hollowshank and preferably is provided with a removable and serrated jaw-face13.

An operating rod designated generally at 15 is rotatably journaled inthe bore of the hollow shank and it has a portion adjacent the fixed jaw12 formed to constitute an operating screw designated at 16. Theoperating rod. 15 is also provided with a helical groove 17, thebhelcalgroove being provided in a portion of the operating rod which isdisposed' in the end of the shank that is remote 'from the fixed aw. Alongitudinally extending slot 18 is formedv in its shank adjacent thehelical groove'17 and an operating sleeve 19 is slidably mounted on itsshank and has secured thereto a1 piny 2O which extendsv through the slot18 and which co-'acts with the helical groove 17 Inithis manner when theoperatingi'or traveling y mg rod wil-l be rotated. n

A carrier or frame 25 is mounted on the shank and includes side plates26' which snuglyengage the side facesot the shank and end plates 27 and,28, The endI platev 28 sleeve 19 is moved longitudinallyv the operat-Ybeing curved correspondingl `to rthe face yof the shank with which `it1s engaged as clearly shown in Figure l. A nut designated generally at30 is fitted in the trame 25 `and isicarried thereby, the nut operatingin a slot 31 extendinglongitudinally in the shank 10and along theoperating screw 16, the threads otthe' nut being operatively reinra'gedwith the screw 16 as clearly shown .in Figure 3.v The nut 30 includeslaterally extending guide arms 82 and outwardly extending attaching arms33 integral with the guide arms (see Figure 4'); The guide'arms 32slidably engage the portions o-` the shank adjacent the slot 31 and theattaching arms 33 snuglyy fit `the `side plates 2601. the frame or thecarrier 25.

.si movable jaw B5` is provided and prefer-` ably' is equipped with aremovable/jaw-face 86 having sei-rations as shown in the drawing. Theshank 37 of the movable jaw 35 is pivotally connected to the carrier 25by means of a pivot pin 38. As shown in Figure 4i the pivot vpin 38 hasthreaded engagen ment as at 38a with one of the side plates 26 and thispivot pin passes through the attaching arms 33 of the nut as well asthrough the pivoted shank and in this manner it constitutes common means:for pivotally connecting the movable jaw to the frame or carrier andfor securing the nut in position. The shank 37 of the pivoted jaw isvprovided at the end thereof remote from the j aw with a socket 37a,which re ceives one end of acoil spring 40, the other end ot the coilspring proiecting from the socket and engaging the nut 30. The coilspring is tensioned to urge the pivoted jaw in one direction so that itwill be disposed to enter into gripping engagement with the work.

ln operation the jaws ot the wrench may j to partake ot the movementthereof and consequently is adj usted toward and away from the fixedjaw. The spring engages the pivoted jaw to maintain it in properposition with respect to the iiXed `jaw so that these jaws mayimmediately come into powerful and gripping engagement with the pipe orwork.

N hat we claim is:

l; In a pipe wrench of the character described, a hollow shank, a fixedjaw arranged at one end of said shank, an operating rod journaled within`said shank and having a port-ion formed to constitute an operatingscrew and having ahelical groove, said hollow shank having alongitudinal slot adjacent the operating screw and a second longitudinalslot ladjacent the helical groove, a travelling sleeve slidably mountedon the hollow shank and having a pin eX- tending through the adjacentslot and cooperating with the helical groove, a carrier slidably mountedon the shank and including side plates ande-nd plates, said side platesand one of said end plates having sliding engagement with the shank, anut fitting in said frame and extending through the adjacent slot andhaving threads engageable with the operating screw,` said nut havinglaterally extending lguide arms engaging the shank and outwardlyextending attaching arms engaging the side plates of the carrier, lamovable jaw having sleeve imparts move-` having its other end eneaoeablewith the t3 b Q nut whereby said pivoted jaw is urged into operativeposition,

2. ln a pipe wrench of the character described, a hollow shank, a iixedjaw arranged at'one end of said shank, an operatrod journaled withinsaid shank and having a portion formed to constitute an operating screwand having a helical groove, said hollow shank having a longitudinalslot adjacent the operating screw and a second longitudinal slotadjacent Athe helical groove, a travelling sleeve slidably mounted on`the hollow shank and having a pin extending through the adjacent' slotand cooperating with the helical groove, a carrier slidably mounted onthe shank and including side plates and end plates, said side plates andone ot' said end plates having sliding engagement with the shank, a nutlitting in said frame and extending through the adjacent slot and havingthreads engageable with the operating screw, said nut having laterallyextending guide arms engaging the shank and outwardly extendingattaching arms engaging the side plates oi the carrier, a movable jawhaving a shank received between the side plates oli the carrier, a pivotpin for pivotally connecting the shank of the movable jaw to thecarrier, said pi'yot pin also eX- tending through the attaching arms ofthe nut for securing` it in position on the carrier.

nnwiN J. Evans. escasa n HnMrI-nLL.

